Research on variation law of geophysical drill-bit downhole flow field under the interaction of multiple hydraulic factors

Mountain geophysical prospecting operations play an important role in the entire petroleum exploration field. Geophysical drill-bit is main tool for mountain operations. Its hydraulic structure directly affects downhole flow field and then chip removal efficiency drilling of bit. At present, most scholars’ research focused on Poly Diamond Crystalline bit, roller etc., less, them study based change single structure. The primary objective this to variation law under interaction multiple factors. time cuttings size two drill-bits with different structures are compared, key factors selected analysis. Using numerical simulation software, take levels parameters carry out orthogonal experiments. Under various factors, distribution channel, downhole, annulus area shaft lining. closely related speed efficiency. When changed, diameter channel best when it 10–12.5 mm, inclination should be set as close possible center length groove increases, movement more stable. Variation studied. This provides a basis design optimization drill-bit.